Everyone was able to lift Mjolnir, worthy or not. They didn't include 'only the worthy guy can lift it' in the show.
SOMEONE FINALLY SAID IT! ...there's a give for the suit life of zac and cody too loooool a gif for everything cause Supernatural mighy be based on a fictional stories but it is actually a show that we all relate to and is a realistic show from our daily lives. They are just like all of us.